Glass rolling apparatus particularly applicable to the production of continuous glass strips



Sept. 8, 1931. E. B. LE MARE" 1,822,627

GLASS ROLLING APPARATUS PARTICULARLY APPLICABLE TO THE PRODUCTION OF CONTINUOUS GLASS STRIPS Filed Dec 18, 1930' Patented Sept. 8, 1931 UNITED STATES PATIENT OFFICE ERNEST BRISTOW LE MARE, OF ST. HELENS, ENGLAND, ASSIGNOR TO PILKINGTON BROTHERS LIMITED, OF LIVERPOOL, ENGLAND, LA; COMPANY ENGLAND GLASS ROLLING APPARATUS PARTICULARLY APILICABLE TO THE PRODUCTION OF CONTINUOUS GLASS 7 STRIPS 1 Application filed December 18, 1930, Serial No. 503,201, and in Great Britain December 28, 1929.

In apparatus of this kind the plastic glass issuing from the pass of the rolling appaiw,

tus, is led over a fiat stationary bed to an an nealing lehr, Where it is supported on a. series of rollers rotated at a peripheral speed slightly higher than the speed at which the strip issues from the pass. In the normal operatlon of the apparatus, therefore, the small tractive effort exercised by the lehr rollers on the lea ding portion of the strip is sufiieient to convey the plastic glass over the fiat stationary bed. At the start of the operation, however, the glass being fed from the pass on to said stationary bed is not sufiiciently set to enable an it to reach the lehr by the propelling action of the strip' forming roller.

According to the invention a series of fulcrums are disposed along each side of the flat bed and two bars engage these fulcrums succcssively, while one end of each bar remains engaged with the plastic glass and the other end is moved to apply tractive force to the strip.

In the accompanying drawings, Figure 1 is a side elevation of the device which is the subject of this invention, applied to a rolling apparatus shown diagrammatically, and Figure 2 is a half plan thereof, showing an operating bar.

Rollers 1 roll a strip of glass 5 which passes over the inclined bed 2 on to the bed 3, beyond which are the lehr rollers 4.

Bars 6 are attached to the bed 3, one at each side thereof. Preferably the attachment is by pivoting the bar'siat 7 to fixed supports, and supporting them by projections 8 on the bed 3. The bars 6 have notches 9 formed in them at regular intervals.

The operation of the device is as follows 1- At the start of a rolling operation, the glass strip, by reason of its "weight, reaches the position siiown in FigureQ Without the application of *tractive force. From this point, 1 until a certainlength of strip rests on the lehr as rollers ifitragitive force must be applied to overcome the friction of the strip on the horizonta'l bed 3. This tractive force is applied by inserting a bar 10 at each side of the bed, in the first of the notches 9, as shown in full lines in Figure 2. The end of'the bar 10 is pressed into the plastic glass so as to engage therewith, and, by slowly moving thebar into the dotted position ll, it is used as'a lever, to apply tractive force to the strip to pull it over the bed 3. When the dotted position 11 has been reached, the bar 10 is lifted out of the first notch,'without disengaging it from the glass, and it is inserted into the second notch, as in dotted position 12. This opera tion is repeated, using each notch in succession as a fulcrum, until a sufiicient length of the strip has passed on to the lehr rollers 4 to give thenecessary traotive force.

The bars 6 may then be turned on their pivots 7 to an approximately vertical position, so as to leave the sides of the bed 3 free of any encumbrance.

The invention is not limited to the construction shown but includes any construction which provides along the bed 3 a series of fulcrums with which bars can be easily engaged and disengaged.

Having described my invention, I declare that what I claim and desire to secure by Letters Patent is 2-- 1. In a glass strip rolling apparatus means for feeding the plastic strip over a fiat stationary bed atthe start of the rolling operation, comprising a series or" fulcrums located at one side of the bed with which a lever bar can be successively engaged and disengaged While one end of said lever bar is engaged with the plastic glass of the strip.

' 2. In a glass strip rolling apparatus, means for feeding the plastic strip over a Hat stationary bed at the start of the rolling Operation, comprising a series of fulcruins located at one side of the bed and a lever bar which can be successively engaged and dis engaged with each fulcrum while one end of said lever bar is engaged with the plastic of the strip.

for feeding the plastic strip over a flat stationary red on to'a roller bed at the start In 2.. glass strip rolling apparatus, means of the rolling operation, comprising a series of fulcrums located at each side of the bed and a lever bar on each side thereof which can be successively engaged and disengaged 6 with each fulcrum while one end of said lever bar is engaged with the plastic glass of the strip. In, a glass strip rolling apparatus, means for-; feeding the plastic strip over a flat sta- 10 tionary bed on to a roller bed at the start of the; rolling operation,comprising a bar attached to each side of the bed provided with a series of notches adapted to act as fulcrums and-"a lever bar on each side thereof which can be engaged and disengaged with the notches in succession while one endof said I lever bar is engaged with the plastic glass of the strip,

5. In a, glass strip rolling apparatus, means for feeding the plastic strip over a flat stationary bed on to a roller bed at the start of the rolling operation, comprising two bars pivotally attached each at one end to the side of thebedand free to be turned upwards about their pivots, said bars being each provided with a series of notches adapted to act as fulcrums with which a lever bar can he successively engaged While one end of said lever bar is engaged with the plastic glass of the strip.

In witness whereof I have affixed my signature hereto.

ERNEST BRISTOV LE MARE. 

